CLADOENDESIS OF EPHEMEROPTERA |
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Baetiella/g1
(Panephemeroptera
Euephemeroptera
Euplectoptera
Anteritorna
pm.Tridentiseta
Tetramerotarsata
Liberevenata
Turbanoculata
Anteropatellata
Baetovectata
Baetungulata
Baetofemorata
- Baetiella/g1)
Nomen hierarchicum:
Baetiella/g1
[g:1931] (incl. Neobaetiella)
In circumscription fits:
— subgen. Baetiella: Kazlauskas 1963: 586
— gen. Baetiella Ueno 1931: 220
Synonyms:
subjective synonym of Baetiella/g [g:1931]
(typus Acentrella japonica) is
Matsumuracloeon/g
[g:1989] (typus Pseudocloeon aino)
(nom. pro
Pseudocloeon
Matsumura 1931: 1473, non Klapalek 1905) (subjectve synonyms: japonica [A.]
= aino [P.])
Nominal taxa included:
References.
Novikova & Kluge 1987: *
*;
Autapomorphies of Baetiella/g1. (1) 2nd segment of labial palp lacks muscle, elongate, without apical projection; at the same time boundary between second and 3rd segments retained (Kluge 1997: Tab.11:12) (see Index of characters [1.1.58]). (2) Larva is adapted to inhabitancy in rapid waters, its body Acentrella-like, i.e. with flattened ventral and convex dorsal side, thorax relatively large in comparison with abdomen (non-unique character – see Index of characters [1a]); paracercus is vestigial, 1-segmented (non-unique character – see Index of characters [1.3.64]); cerci are long, swimming setae are vestigial or lost (but at least vestigial bases of swimming setae are retained at least on middle segments). Dorsal side of tibia with a stripe of densely and irregularly situated long thin setae (Kluge 1997: Tab.11:13) (unlike Acentrella/g1, these setae do not form a regular straight row). () Imago and subimago in rest keep their wings spread by sides (but being disturbed turn their wings up). (The character is known for two species only – tuberculatum [P.] and muchei [P.].) Majority of other Turbanoculata in rest keep their wings turning up, only selected species of Procloeon/g2 keep their wings in V-like position or spread by sides. Besides this, spread position of wings is characteristic for Ephemeroptera with modified pterothorax – for Caenoptera and for short-living Ephemeroptera with vestigial legs. Characters of Baetiella/g1 of unclear phylogenetic status. () Larval abdominal terga lack wide scales [see Turbanoculata (12)] (see Index of characters [1.3.4]). () Hind wings are lost [see Turbanoculata (10)]. Non-unique apomorphy (see Index of characters [2.2.59]). Plesiomorphies of Baetiella/g1. Unlike Acentrella/g1, ... imaginal and subimaginal anteronotal protuberance of mesonotum is low. Variable characters of Baetiella/g1. Larval abdominal terga can be without projections (japonica [B.]), or with unpaired median projections near posterior margin (e.g., tuberculatum [P.]), or with paired submedian projections near posterior margin (bispinosa [P.], macani [N.]); the same in some other mayflies (see Index of chasracters [1.3.3]). Usually all tergalii I–VII are present, but in macani [N.] tergalii VII are lost; in the same species, a gill process is present medially to base of each coxa (the same in some other Turbanoculata – see Index of characters [1.2.12]). |
Size. Fore wing length 4–7 mm(see Tetramerotarsata).
Distribution. Eastern and Middle Asia (to the west up to Tien-Shan).
Nominal species in Baetiella/g1:
aino Marsumura 1931 [Pseudocloeon]
— typus
nominis Matsumuracloeon — syn.subj. japonica
[Acentrella]
armata Braasch 1983 [Baetiella]
ausobskyi Braasch 1983 [Baetiella]
baei Phlai-ngam & Boonsoong
& Gattolliat & Tungpairojwong 2024 [Baetiella (Baetiella)]
baibungensis Shi
& Tong 2015 [Gratia]
bibranchia Phlai-ngam & Boonsoong & Gattolliat &
Tungpairojwong 2024 [Baetiella (Baetiella)]
bispinosus Gose 1980 [Pseudocloeon]
imanishii Braasch 1983 [Baetiella]
japonica Imanishi 1931 [Acentrella]
— typus
nominis Baetiella
lannaensis Phlai-ngam & Boonsoong
& Gattolliat & Tungpairojwong 2024 [Baetiella (Baetiella)]
lanpingensis Shi
& Tong 2015 [Baetiella]
macani Müller-Liebenau 1985 [Neobaetiella]
marginata Braasch 1983 [Baetiella]
muchei Braasch 1978 [Pseudocloeon]
-
-
/
narumonae Boonsong & Thomas & Sangpradub 2002 [Gratia]
-
-
/
nigrovena Gui & Zhou &
Su 1999 [Pseudocloeon]
— syn.subj.
bispinosus [Pseudocloeon]
nosagawaensis Gose 1965 [Baetiella]
— syn.subj. tuberculatum
[Pseudocloeon]
sexta Shi
& Tong 2015 [Baetiella]
subansiri Vasanth & Selvakumar
& Subramanian (in Vasanth & Selvakumar
& Subramanian & Sivaramakrishnan & Sinha) 2020 [Baetiella]
sororculaenadinae Thomas 1992 [Gratia]
spathae Shi
& Tong 2015 [Baetiella]
trispinata Tong & Dudgeon 2000 [Baetiella]
tuberculatum Kazlauskas 1963 [Pseudocloeon (Baetiella)]
-
-
/
uenoi Müller-Liebenau 1985 [Neobaetiella]
— typus
nominis Neobaetiella — syn.subj. tuberculatum [Pseudocloeon]
Examined also:
See also: